/Engine/Plugins/Experimental/Mutable/Source/CustomizableObject/Classes/MuCO/CustomizableObjectStreamedExtensionData.h
To stream this data in, load the object at the path returned by GetPath and then pass it into NotifyLoaded.
const [TSoftObjectPtr](API\Runtime\CoreUObject\UObject\TSoftObjectPtr)< [UCustomizableObjectExtensionDataContainer](API\Plugins\CustomizableObject\MuCO\UCustomizableObjectExtensionData-) > & GetPath() const